Write a function use mergesort(inputfile, outputfile). this function takes as input a name of the input file containing a list of integer numbers, one number per line, and the output file name. this function should read-in numbers from the file, sort them using the provided mergesort function, and output the sorted numbers to the output file, one number per line.

Reading characters and strings from the keyboard: consider the following c++ program 1. #include 2. #include 3. using namespace std; 4. mystring1 5. 6. int main() 7. { 8. 9. string mystring1, mystring2; mychar1 10. 11. 12. char mychar1, mychar2; 13. 14. cout< < "enter a string: "; mychar2 15. 16. cin> > mystring1; // 17. cin. get(mychar1); 18. cin> > mychar2; 19. getline(cin, mystring2); mystring2 20. 21. 22. cout<

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How is the brightness of oled of the diaplay is controled